Charging gun wire clamping structure

Abstract

The utility model discloses a charging gun line clamping structure, including the gun shell, the handle cavity is formed in the gun shell, the rear end of handle cavity forms the gun tail mouth for cable passes through, be equipped with the line clamp subassembly for the cable of package in handle cavity, line clamp subassembly includes upper clamping tile and lower clamping tile, the inside of upper clamping tile forms the circumferential tooth for the upper part of recessed cable, the inside of lower clamping tile forms the axial tooth for the lower part of recessed cable, the front end of upper clamping tile forms the clamping groove, the inner wall of handle cavity forms the inner key, and the inner key is suitable for inserting and connecting the clamping groove, and the lower end of upper clamping tile is connected with the upper end of lower clamping tile and is stuck to. The utility model is favorable for promoting the firmness of clamping wire, and makes cable and gun shell reliable connection.

Description

Technical Field

[0001] This utility model relates to the field of charging gun technology, and specifically to a charging gun wire clamping structure. Background Technology

[0002] Currently, new energy vehicle charging guns consist of a gun housing, with a charging terminal located at the front. The bare wire end of a conductive cable is connected to the rear end of the charging terminal. The cable extends out of the charging gun through the rear end. During use, the cable is inevitably pulled. To prevent damage to the connection structure between the cable and the charging terminal due to frequent pulling, a clamp is installed inside the charging gun to clamp the cable. Specifically, the clamp contacts the cable sheath; that is, the part of the clamp that contacts the cable is behind the connection point between the cable and the charging terminal. When the cable is pulled at the part outside the charging gun, the clamp blocks the transmission of pulling force, preventing external force from acting on the connection point between the cable and the charging terminal. However, the friction between the clamp and the smooth cable sheath is insufficient. When the pulling force is large, the pulling force still overcomes the aforementioned friction and is transmitted to the connection point between the cable and the charging terminal. Therefore, the clamping structure of the existing charging gun needs to be improved. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a charging gun wire clamping structure that improves the wire clamping firmness.

[0004] The objective of this utility model is achieved through the following technical solution.

[0005] The present invention discloses a charging gun cable clamping structure, including a gun shell, a handle cavity formed inside the gun shell, a gun tail opening formed at the rear end of the handle cavity for the cable to pass through, wherein the handle cavity is provided with a cable clamping assembly for clamping the cable, the cable clamping assembly includes an upper clamping plate and a lower clamping plate, the inner side of the upper clamping plate is formed with circumferential teeth for crimping the upper part of the cable, the inner side of the lower clamping plate is formed with axial teeth for crimping the lower part of the cable, the front end of the upper clamping plate is formed with a slot, the inner wall of the handle cavity is formed with an inner protruding key, the inner protruding key is adapted to be inserted into the slot, and the lower end of the upper clamping plate is abutted against and connected to the upper end of the lower clamping plate.

[0006] Preferably, the front end of the upper clamping tile has a loop portion for cable passage, the front end of the lower clamping tile is attached to the rear end of the loop portion, and the outer wall of the loop portion is adapted to be attached to the inner wall of the handle cavity.

[0007] Preferably, a positioning step is formed inside the handle cavity, the front end of the ring sleeve is attached to the positioning step, and the ring sleeve can pass through the gun tail muzzle.

[0008] Preferably, the charging gun cable clamping structure of this utility model further includes a tail cover, the front of which is provided with a tube portion, the front end of which is formed with a protruding buckle, and the handle cavity is formed with a concave ring buckle groove. The tube portion is adapted to be inserted into the gun tail port, the front end face of which is attached to the rear end face of the cable clamp assembly, the protruding buckle is engaged with the concave ring buckle groove, and the rear of the tail cover is provided with a soft sleeve portion for cable adaptation to pass through.

[0009] Preferably, the front end of the axial tooth is formed with a wedge-shaped portion, which is configured to be lower at the front and higher at the rear.

[0010] Preferably, a notch is formed on the insertion tube portion, and the notch extends forward through the insertion tube portion.

[0011] Preferably, an inner convex sealing ring is formed on the inner wall of the flexible sleeve.

[0012] Compared with the prior art, the advantages of this utility model are as follows: by setting a wire clamp assembly for clamping cables inside the handle cavity, the wire clamp assembly includes an upper clamping plate and a lower clamping plate. The inner side of the upper clamping plate has circumferential teeth for crimping the upper part of the cable, and the inner side of the lower clamping plate has axial teeth for crimping the lower part of the cable, which helps to improve the clamping firmness. By setting a slot at the front end of the upper clamping plate and an inner protruding key on the inner wall of the handle cavity, the inner protruding key is adapted to the slot. The lower end of the upper clamping plate is attached to the upper end of the lower clamping plate, so that the gun shell effectively prevents the wire clamp assembly from rotating and shifting. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of a charging gun with the charging gun clamping structure of this utility model from the right view direction.

[0014] Figure 2 for Figure 1 A partial structural diagram.

[0015] Figure 3 This is a three-dimensional structural diagram of a charging gun with the charging gun clamping structure of this utility model.

[0016] Figure 4 This is an exploded view of a charging gun with the charging gun clamping structure of this utility model.

[0017] Figure 5 This is an exploded top view of the wire clamp assembly of this utility model.

[0018] Figure 6 This is an exploded view of the wire clamp assembly of this utility model from a bottom angle.

[0019] Figure 7 This is a rear-view three-dimensional structural diagram of the tail cover of this utility model.

[0020] Figure 8 This is a rear-view three-dimensional structural diagram of the gun casing of this utility model.

[0021] Labeling: 1. Gun casing; 11. Handle chamber; 101. Recessed ring groove; 102. Convex key; 103. Positioning step; 104. Cable clamp assembly; 2. Upper clamping plate; 21. Circumferential tooth; 211. Ring sleeve; 212. Slot; 2101. Lower clamping plate; 22. Axial tooth; 221. Wedge-shaped part; 3. Tail cap; 31. Insertion tube; 311. Convex buckle; 312. Notch groove; 32. Flexible sleeve; 321. Convex sealing ring; 33. Sealing ring; 99. Cable. Detailed Implementation

[0022] The present invention will now be further described with reference to the accompanying drawings.

[0023] The charging gun cable clamping structure of this utility model, such as Figures 1 to 4 and Figure 8 As shown, the device includes a gun casing 1, within which a handle cavity 11 is formed. The rear end of the handle cavity 11 has a butt port 101 for a cable 99 to pass through. A cable clamp assembly 2 for clamping the cable 99 is provided within the handle cavity 11. The cable clamp assembly 2 includes an upper clamping plate 21 and a lower clamping plate 22, as shown... Figure 6 As shown, the inner side of the upper clamping tile 21 has circumferential teeth 211 for crimping the upper part of the cable 99. That is, the upper clamping tile 21 is an arc-shaped shell, and the circumferential teeth 211 extend circumferentially along the arc shape. The circumferential teeth 211 protrude inward relative to the inner wall of the upper clamping tile 21, and the circumferential teeth 211 can be intermittently arranged, that is, recesses are formed between adjacent circumferential teeth 211. Figure 5 As shown, the inner side of the lower clamping tile 22 has axial teeth 221 for crimping the lower part of the cable 99. The lower clamping tile 22 is an arc-shaped shell, and the axial teeth 221 extend along the axial direction of the arc of the lower clamping tile 22, as shown. Figure 5 As shown, a slot 2101 is formed at the front end of the upper clamping tile 21, such as... Figure 8 As shown, an internally protruding key 103 is formed on the inner wall of the handle cavity 11, such as... Figure 2 As shown, the protruding key 103 is adapted to the insertion slot 2101, as... Figure 4 As shown, the lower end of the upper clamping tile 21 is attached to the upper end of the lower clamping tile 22, that is to say, the upper clamping tile 21 and the lower clamping tile 22 are combined into a cylindrical structure, which can prevent the upper clamping tile 21 and the lower clamping tile 22 from rotating relative to each other.

[0024] like Figure 2As shown, cable 99 is led out of the gun housing 1 through the gun muzzle 101. Cable 99 passes through the clamp assembly 2, that is, the clamp assembly 2 clamps cable 99. Cable 99 is squeezed by the clamp assembly 2, which causes the circumferential teeth 211 and axial teeth 221 to press and dent cable 99 respectively. Specifically, the circumferential teeth 211 and axial teeth 221 contact the outer sheath of cable 99. Thus, the circumferential teeth 211 form a circumferentially extending groove on the outer sheath of cable 99, and the axial teeth 221 form an axially extending groove on the outer sheath of cable 99. Furthermore, the radial inner end of the circumferential teeth 211 is inserted into the aforementioned circumferentially extending groove, and the radial inner end of the axial teeth 221 is inserted into the aforementioned axially extending groove. When cable 99 tends to shift axially relative to clamp assembly 2, the circumferentially extending groove has a larger range of relative obstruction to clamp assembly 2 in a direction approximately perpendicular to the relative shift. Similarly, when cable 99 tends to shift circumferentially relative to clamp assembly 2, the axially extending groove has a larger range of relative obstruction to clamp assembly 2. However, when cable 99 shifts radially relative to clamp assembly 2, because clamp assembly 2 clamps cable 99 from both above and below, cable 99 is not easily shifted radially. Furthermore, as... Figure 5 and Figure 6 As shown, the axial teeth 221 can be circumferentially spaced, and the number of axial teeth 221 can be four. This is more conducive to the lower clamping plate 22 blocking the radial displacement of the cable 99 from multiple angles. Since the circumferential teeth 211 are circumferentially extended, the upper clamping plate 21 can also block the radial displacement of the cable 99 from multiple angles. As can be seen from the above, the clamping assembly 2 can block and position the cable 99 in the circumferential, axial and radial directions, making it difficult for the cable 99 to shift relative to the clamping assembly 2. This avoids the loosening of the corresponding part of the clamping assembly 2. That is to say, the clamping structure of this utility model is conducive to improving the clamping firmness. When the cable 99 is subjected to tensile force, the circumferential teeth 211 effectively block the transmission of tensile force to the connection part between the front end of the cable 99 and the charging terminal, which is conducive to improving the connection reliability between the cable 99 and the charging terminal. Existing technologies often overlook the torsional force experienced by the portion of cable 99 located at the rear of the charging gun. However, the axial tooth 221 of this invention can form an axially extending groove on the outer sheath of cable 99, allowing the aforementioned axially extending groove to rotate relative to the blocking clamp assembly 2 over a larger range. This makes it difficult for the torsional force to be transmitted to the connection point between the front end of cable 99 and the charging terminal. By providing an inner protruding key 103 to adapt to the insertion slot 2101, the gun housing 1 effectively prevents the clamp assembly 2 from rotating and shifting.

[0025] Furthermore, such as Figure 5 and Figure 6 As shown, the front end of the upper clamping tile 21 has a loop portion 212 for the cable 99 to pass through, that is to say, the upper clamping tile 21 and the loop portion 212 are integrally formed. Therefore, the slot 2101 is specifically formed in the loop portion 212, as shown. Figure 4As shown, the front end of the lower clamping tile 22 is attached to the rear end of the connecting ring sleeve 212, as... Figure 2 As shown, the outer wall of the ring sleeve 212 is adapted to fit against the inner wall of the connecting handle cavity 11, so the inner wall of the handle cavity 11 is effectively radially positioned to hold the clamping tile 21.

[0026] Furthermore, such as Figure 8 As shown, a positioning step 104 is formed inside the handle cavity 11, such as Figure 2 As shown, the front end of the ring sleeve 212 abuts against the positioning step 104, and the ring sleeve 212 can pass through the gun tail port 101; therefore, during the assembly of the charging gun, the cable 99 is pre-passed through the ring sleeve 212, the cable 99 is inserted into the gun housing 1, and then the upper clamping plate 21 is inserted into the handle cavity 11 through the gun tail port 101. Since the lower clamping plate 22 has not yet been installed at this time, the cable 99 is pushed downward by the circumferential teeth 211, which makes it easier for the upper clamping plate 21 to be inserted into the handle cavity 11. The inner protruding key 103 is opposite to... Insert it into the slot 2101, then the front end of the ring sleeve 212 contacts the positioning step 104, and then the lower clamp 22 is inserted into the handle cavity 11 through the gun butt 101. The axial teeth 221 squeeze the cable 99, and the inner wall of the handle cavity 11 provides radial inward support to the lower clamp 22. Then the front end of the lower clamp 22 contacts the rear end of the ring sleeve 212, thus installing the lower clamp 22 in place. The effect of the axial teeth 221 squeezing the cable 99 also causes the circumferential teeth 211 to press and dent the outer sheath of the cable 99.

[0027] Furthermore, such as Figure 2 and Figure 7 As shown, the charging gun cable clamping structure of this utility model also includes a tail cap 3. The front part of the tail cap 3 is provided with a tube portion 31, and the front end of the tube portion 31 forms a protruding buckle ring 311, such as... Figure 4 As shown, a recessed ring groove 102 is formed inside the handle cavity 11, such as Figure 1 and Figure 2 As shown, the insertion tube 31 is fitted into the muzzle 101. A sealing ring 33 is provided between the insertion tube 31 and the inner wall of the handle cavity 11. The front end face of the insertion tube 31 is abutted against the rear end face of the connecting clamp assembly 2. That is, the rear end faces of the upper clamping plate 21 and the lower clamping plate 22 are abutted against the front end face of the connecting insertion tube 31. The convex buckle 311 engages with the concave buckle groove 102. Thus, the concave buckle groove 102 prevents the tail cap 3 from shifting axially, and the front end face of the insertion tube 31 prevents the clamp assembly 2 from shifting backward. Therefore, the front end face of the insertion tube 31 and the positioning step 104 combine to axially position the clamp assembly 2. Figure 2 and Figure 8As shown, the rear of the tail cap 3 is provided with a flexible sleeve 32 for the cable 99 to pass through. That is to say, the flexible sleeve 32 and the insertion tube 31 are coaxially arranged. The flexible sleeve 32 and the insertion tube 31 are formed by injection molding with rubber coating. The material of the insertion tube 31 can be ABS or nylon, and the material of the flexible sleeve 32 can be TPE. The rear end of the flexible sleeve 32 is located on the rear outer side of the handle shell 1. When using the charging gun, the cable 99 hangs down to the rear side of the charging gun. Through the gravity of the cable 99, the flexible sleeve 32 can be slightly elastically bent, which helps to increase the bending radius of the cable 99 and avoids the copper core of the cable 99 from cracking.

[0028] Furthermore, such as Figure 5 As shown, the front end of the axial tooth 221 has a wedge-shaped portion 2211. The wedge-shaped portion 2211 is configured with a lower front and a higher rear. That is, the front end of the wedge-shaped portion 2211 has a smaller protrusion height relative to the inner wall of the lower clamping tile 22, while the rear end of the wedge-shaped portion 2211 has a larger protrusion height relative to the inner wall of the lower clamping tile 22. The rear end of the wedge-shaped portion 2211 is set at the same height as the axial tooth 221. Therefore, when the lower clamping tile 22 is inserted into the handle cavity 11, since the front end of the wedge-shaped portion 2211 has a smaller protrusion height relative to the inner wall of the lower clamping tile 22, the wedge-shaped portion 2211 initially exerts a weaker pressure on the cable 99. As the lower clamping tile 22 is inserted into the handle cavity 11, the pressure intensity of the wedge-shaped portion 2211 on the cable 99 gradually increases, so that the lower clamping tile 22 exerts a progressive pressure on the cable 99. This is beneficial for the lower clamping tile 22 to be easily inserted into the handle cavity 11 and can avoid scratching the cable 99.

[0029] Furthermore, such as Figure 7 As shown, a notch 312 is formed on the insertion tube 31, and the notch 312 extends forward through the insertion tube 31, which helps to reduce the rigidity of the front end of the insertion tube 31. The notch 312 can be circumferentially distributed. When the insertion tube 31 is inserted into the handle cavity 11, the gun tail 101 can relatively squeeze the front end of the insertion tube 31, causing the notch 312 to elastically narrow. When the protruding buckle 311 reaches the concave buckle groove 102, the front end of the insertion tube 31 elastically returns to its original position and opens, so that the protruding buckle 311 is engaged in the concave buckle groove 102, which facilitates the easy installation of the tail cap 3.

[0030] Furthermore, such as Figure 2 and Figure 8 As shown, an inner convex sealing ring 321 is formed on the inner wall of the flexible sleeve 32. Since the cable 99 fits through the flexible sleeve 32, the inner convex sealing ring 321 abuts against the outer sheath of the connecting cable 99, thereby achieving a sealing effect.

Claims

1. A charging gun cable clamping structure, comprising a gun housing (1), wherein a handle cavity (11) is formed within the gun housing (1), and a gun tail port (101) for a cable (99) to pass through is formed at the rear end of the handle cavity (11), characterized in that: The handle cavity (11) is provided with a clamp assembly (2) for clamping the cable (99). The clamp assembly (2) includes an upper clamping plate (21) and a lower clamping plate (22). The inner side of the upper clamping plate (21) is formed with circumferential teeth (211) for crimping the upper part of the cable (99). The inner side of the lower clamping plate (22) is formed with axial teeth (221) for crimping the lower part of the cable (99). The front end of the upper clamping plate (21) is formed with a slot (2101). The inner wall of the handle cavity (11) is formed with an inner protruding key (103). The inner protruding key (103) is adapted to be inserted into the slot (2101). The lower end of the upper clamping plate (21) is attached to the upper end of the lower clamping plate (22).

2. The charging gun cable clamping structure according to claim 1, characterized in that: The front end of the upper clamping tile (21) is formed with a loop (212) for the cable (99) to pass through. The front end of the lower clamping tile (22) is attached to the rear end of the loop (212), and the outer wall of the loop (212) is adapted to be attached to the inner wall of the handle cavity (11).

3. The charging gun cable clamping structure according to claim 2, characterized in that: A positioning step (104) is formed inside the handle cavity (11), and the front end of the ring sleeve (212) is attached to the positioning step (104). The ring sleeve (212) can pass through the gun tail (101).

4. The charging gun cable clamping structure according to claim 3, characterized in that: It also includes a tail cap (3), the front of which is provided with a tube part (31), the front end of which is formed with a protruding buckle (311), and a concave ring buckle groove (102) is formed in the handle cavity (11). The tube part (31) is adapted to be inserted into the gun tail muzzle (101). The front end face of the tube part (31) is attached to the rear end face of the wire clamp assembly (2). The protruding buckle (311) is fastened to the concave ring buckle groove (102). The rear of the tail cap (3) is provided with a soft sleeve part (32) for the cable (99) to pass through.

5. The charging gun cable clamping structure according to claim 4, characterized in that: The front end of the axial tooth (221) is formed with a wedge-shaped portion (2211), which is configured to be lower at the front and higher at the rear.

6. The charging gun cable clamping structure according to claim 4, characterized in that: A notch (312) is formed on the insertion part (31), and the notch (312) extends forward through the insertion part (31).

7. The charging gun cable clamping structure according to claim 4, characterized in that: An inner convex sealing ring (321) is formed on the inner wall of the soft sleeve (32).

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